Tungsten(III) chloride
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Cl18W6 | |
Molar mass | 1741.14 g·mol−1 |
Appearance | yellow brown solid |
Density | 5.44 g·cm−3 |
Melting point | 550[1] °C (1,022 °F; 823 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tungsten(III) chloride is the inorganic compound with the formula W6Cl18. It is a cluster compound. It is a brown solid, obtainable by chlorination of tungsten(II) chloride.[2] Featuring twelve doubly bridging chloride ligands, the cluster adopts a structure related to the corresponding chlorides of niobium and tantalum. In contrast, W6Cl12 features eight triply bridging chlorides.
A related mixed valence W(III)-W(IV) chloride is prepared by reduction of the hexachloride with bismuth:[3]
- 9 WCl6 + 8 Bi → 3 W3Cl10 + 8 BiCl3
References
- ^ Eliseev, S. S.; Synthesis and physicochemical properties of tungsten trichloride. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy 1983, V19(7), P1182-5 CAPLUS
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